Weight-Sensitive RFID Tag for Inventory Monitoring
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Solution Overview
Problem
Current retail shopping facilities face challenges in timely replenishment of products on display surfaces due to the lack of effective inventory monitoring using RFID tags.
Innovation Solution
A product display surface apparatus equipped with weight-sensitive RFID tags that change transmission levels based on the weight of products, allowing an RFID-tag reader and control circuit to determine when inventory is low, enabling automatic detection and replenishment of products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RFID tags are used to identify individual items, then product identification capability is improved, but timely inventory monitoring and replenishment is not achieved
Solution Approach 1:
The system implements automatic feedback by using RFID readers to continuously monitor product presence on display surfaces. When products are removed, the RFID tag detection immediately triggers a replenishment notification, creating a closed-loop feedback system that eliminates manual checking delays and ensures timely restocking.
Solution Approach 2:
The inventory monitoring system operates autonomously without requiring manual intervention. RFID tags automatically detect product presence and absence, and the system self-generates replenishment alerts, enabling the inventory management to serve itself without human labor for manual counting and monitoring.
2Device complexity
If manual inventory checking is used, then system complexity is reduced, but replenishment timeliness deteriorates
Solution Approach 1:
The patent replaces manual mechanical inventory checking with an automated RFID-based electronic monitoring system. RFID readers automatically detect product presence without human intervention, substituting the mechanical action of manual counting with electronic field-based detection, thereby reducing operational time while managing system complexity through standardized hardware integration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures timely replenishment of products by accurately monitoring inventory levels, ensuring availability of products for consumers and optimizing stockroom inventory.
Implementation Method 1
the RFID tag is weight-sensitive and has a transmission element that moves with respect to a remaining portion of the RFID tag as a function of varying weight being supported by the product display surface
Implementation Method 2
RFID tags typically comprise an integrated circuit and one or more antennas. The integrated circuit typically carries out a variety of functions including modulating and demodulating radio frequency signals
Data Source
AI summary
A product display surface supports at least one product being offered for sale thereon. This product display surface has a weight-sensitive RFID tag associated therewith. This tag has at least one transmission element that moves with respect to a remaining portion of the tag as a function of weight being supported by the product display surface. So configured, the weight-sensitive RFID tag transmits at a first level when there are no products (or only a few products) on the product display surface and at a second level when there are at least a predetermined number of products on the product display surface, the first transmission level being less than the second transmission level. An RFID-tag reader reads the weight-sensitive RFID tag and a control circuit determines when the first product display surface lacks sufficient displayed inventory as a function, at least in part, of the weight-sensitive RFID tag's transmission strength.